Sometimes it's like the camera gets "tilted" after you take a big hit. Needs more realistic damage, the ability to flip, the "crash cam" is beyond annoying because you can't predict where your car is going to be when it comes back from the crash sequence. Great gameplay. Could use a bunch of cars. Currently, when you unlock the "new" car, it only lasts one level, and then on level 2 you're driving he grey one again.
Did you use your Tech Tree to build an Archery in your castle? Without an archery the archers remain graye out.